Literature Cited
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- Haslam, E. Chemistry of Vegetable Tannins, Academic Press, New York (1966), p. 10.
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- Owades, J. L., Rubin, G., and Brenner, M. W. Am. Soc. Brewing Chemists Proc., 1958, p. 66.
- Pridham, J. B. Methods in Polyphenol Chemistry, The Macmillan Company, New York (1963), p. 3.